From owner-biophysics@net.bio.net Tue Jun 02 23:00:00 1998 Path: biosci!news.Stanford.EDU!su-news-feed2.bbnplanet.com!su-news-hub1.bbnplanet.com!news.bbnplanet.com!logbridge.uoregon.edu!news-peer.gip.net!news.gsl.net!gip.net!news.maxwell.syr.edu!nntp2.dejanews.com!nnrp1.dejanews.com!not-for-mail From: dm_telvis@yahoo.com Newsgroups: bionet.biophysics Subject: ultrasound and the freezing process Date: Wed, 03 Jun 1998 16:22:07 GMT Organization: Deja News - The Leader in Internet Discussion Lines: 15 Message-ID: <6l3t7f$ka3$1@nnrp1.dejanews.com> References: NNTP-Posting-Host: 205.226.97.72 X-Article-Creation-Date: Wed Jun 03 16:22:07 1998 GMT X-Http-User-Agent: Mozilla/4.05 [en] (Win95; I ;Nav) It recently occurred to me that application of continous ultrasound pulses during the freezing of tissue might just keep the ice crystal lattices mobile enough to prevent cell membrane damage, possibly by tuning to the resonant harmonic that breaks the crystal bond, and sound waves would possibly do this w/o heating the system to a great degree. I have seen an example of acoustic refrigeration where the reverse engineering of the phenomenon of a metal pipe thawing from liquid nitrogen temperatures emitting a tone was used... how possible is this concept? what frequqncies would be the likeliest to work, if this is even a remotely possible or doable concept. comments? Don Tripontode, dm_telvis@yahoo.com> -----== Posted via Deja News, The Leader in Internet Discussion ==----- http://www.dejanews.com/ Now offering spam-free web-based newsreading .